Detection of filamentary X-ray structure in the core of the Shapley supercluster
Received 29 July 1998 / Accepted 29 September 1998
We report on X-ray observations of the core of the Shapley Supercluster. Combining data from pointed observations of the ROSAT PSPC detector and data from the ROSAT All-Sky Survey, the observed region covers an area of . It contains the central clusters A3562, A3558 and A3556.
We find clear evidence for X-ray emission connecting the three clusters. This confirms the existence of a filamentary, physical structure embedding the three clusters A3562, A3558 and A3556. We also find evidence for faint emission westwards of A3556. In total, the extension of the filamentary X-ray emission of the core of the Shapley Supercluster amounts up to at least Mpc. The total luminosity in the 0.1-2.4 keV energy band is erg s-1.
Key words: galaxies: clusters: general cosmology: large-scale structure of Universe X-rays: galaxies
Present address: Canadian Institute for Theoretical Astrophysics, 60 St. George Street, Toronto, M5S 1A7, Canada
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© European Southern Observatory (ESO) 1999
Online publication: November 26, 1998